Dict: strongs - hairesis
Strongs:
G139 @ αἵρεσις hairesis hah'ee-res-is From G138; properly a choice that is (specifically) a party or (abstractly) disunion. (heresy is the Greek word itself.): - heresy [which is the Greekord itself] sect.
G2506 @ καθαίρεσις kathairesis kath-ah'ee-res-is From G2507; demolition; figuratively extinction: - destruction pulling down.